NVIDIA GeForce RTX 4070 Max-Q vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark scores for the NVIDIA GeForce RTX 4070 Max-Q and the NVIDIA H20. Both processors sit at the 50th percentile among all GPUs tracked, with an average benchmark score of zero in each case. This places them in a neutral position within the database, though their architectural roles could hardly be more distinct. The RTX 4070 Max-Q is a mobile part aimed at thin-and-light laptops, while the H20 is a server accelerator with no display outputs. Without measured frame rates or compute workloads, the comparison rests entirely on the specification sheet and the capabilities implied by each design.

The most decisive gap appears in raw throughput. The H20 delivers 39.54 TFLOPS of FP32 compute, more than three times the 11.34 TFLOPS of the RTX 4070 Max-Q. In FP16, the gap widens further: the H20 reaches 79.07 TFLOPS (at a 2:1 ratio), while the RTX 4070 Max-Q holds steady at 11.34 TFLOPS (1:1). For any workload that leverages tensor operations, the H20 is in a different performance class. The RTX 4070 Max-Q does hold an advantage in pixel throughput, 59.04 GPixel/s versus 47.52 GPixel/s for the H20, a function of its higher ROP count (48 versus 24) and its lower, but more balanced, clock profile. Texture rate tells the opposite story: the H20 outputs 617.8 GTexel/s, compared to 177.1 GTexel/s for the RTX 4070 Max-Q, driven by 312 TMUs against 144.

Memory bandwidth separates the two even more dramatically. The H20 uses 96 GB of HBM3 across a 6144-bit bus, delivering 4.03 TB/s. The RTX 4070 Max-Q has 8 GB of GDDR6 on a 128-bit interface, yielding 256.0 GB/s. That is a 15.7x difference in bandwidth, a chasm that dictates which workloads each part can realistically handle. The H20 is built for large models and data-parallel compute; the RTX 4070 Max-Q targets conventional graphics and lighter tasks.

Neither part shows a win in the head-to-head benchmark table, and the wins tally sits at zero for both. The database records no scenario where one overtakes the other in a measured test, which means the comparison must default to architectural intent and specification-derived capabilities.

Architecture Differences

The RTX 4070 Max-Q uses the AD106 chip, built on Ada Lovelace architecture. The H20 uses the GH100 chip, built on Hopper. Both are fabricated by TSMC on a 5 nm process, and both use the same foundry. The similarities end there. AD106 packs 22,900 million transistors into a 188 mm² die, yielding a transistor density of 121.8M per mm². GH100 is a much larger die at 814 mm², holding 80,000 million transistors for a density of 98.3M per mm². The H20 is physically enormous by comparison, roughly 4.3x the die area and 3.5x the transistor count.

The RTX 4070 Max-Q has 4608 shading units, 144 TMUs, 48 ROPs, 36 RT cores, and 144 tensor cores. The H20 has 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. Notably, the H20 lists no RT cores at all, reflecting its server compute focus rather than real-time ray tracing. The H20 also lacks any display outputs, while the RTX 4070 Max-Q's outputs are described as "Portable Device Dependent." The H20 does not support DirectX, OpenGL, or Vulkan, as those APIs are marked N/A. The RTX 4070 Max-Q supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Clock behavior differs fundamentally. The RTX 4070 Max-Q operates at a base clock of 735 MHz and boosts to 1230 MHz, which is deliberately low to fit within a 35 W power envelope. The H20 runs at 1830 MHz base and 1980 MHz boost, consuming 500 W with a suggested power supply of 900 W. The memory clocks also diverge: the RTX 4070 Max-Q uses 2000 MHz with 16 Gbps effective, while the H20 uses 1313 MHz with 5.3 Gbps effective, but the HBM3 bus width compensates massively.

The RTX 4070 Max-Q is an integrated form factor (IGP) with no power connectors, while the H20 is an SXM module, a standard server form factor. The bus interface also differs: PCIe 4.0 x8 for the mobile part, PCIe 5.0 x16 for the server part. Release timing splits the pair: the RTX 4070 Max-Q launched on January 2, 2023, while the H20 launched on January 31, 2024. The RTX 4070 Max-Q is part of the GeForce 40 Mobile generation, with the GeForce 30 Mobile as predecessor and GeForce 50 Mobile as successor. The H20 belongs to the Server Hopper generation, with Server Ada as predecessor and Server Blackwell as successor.

The Verdict

The data supports a clear division of purpose. The RTX 4070 Max-Q is a mobile graphics solution for laptops, with a 35 W TDP, integrated form factor, and a full graphics API stack. The H20 is a server accelerator with a 500 W TDP, SXM module format, no display outputs, and no traditional graphics APIs. Neither part is a substitute for the other.

For applications that need rasterization, ray tracing, or real-time graphics, the RTX 4070 Max-Q is the only viable option from this pair. It has RT cores, supports DirectX 12 Ultimate, and outputs to portable displays. Its pixel rate is higher than the H20, and its ROP count is double. The H20 cannot render frames at all; it has no display outputs and no graphics API support.

For compute-heavy workloads, particularly those involving FP16 or large memory footprints, the H20 dominates. Its FP16 throughput of 79.07 TFLOPS is nearly 7x the RTX 4070 Max-Q's 11.34 TFLOPS. Its 96 GB of HBM3 memory with 4.03 TB/s bandwidth is unmatched by the mobile part's 8 GB and 256.0 GB/s. The H20 also has far more shading units (9984 versus 4608) and tensor cores (312 versus 144), though it lacks RT cores entirely.

The percentile ranking of 50th for both parts reflects their specialized positioning rather than any equivalence in performance. The RTX 4070 Max-Q is a mid-tier mobile GPU; the H20 is a high-end server part with a specific market. The 500 W TDP and 900 W suggested power supply for the H20 make it unsuitable for any portable use, while the RTX 4070 Max-Q's 35 W TDP makes it suitable only for portable or low-power contexts.

From the recorded data, the choice is dictated by workload type and physical constraints. Anyone needing graphics output or mobile operation selects the RTX 4070 Max-Q. Anyone needing maximum compute throughput or large memory capacity selects the H20. There is no overlap in their functional domains.

Specification Differences

| Field | NVIDIA GeForce RTX 4070 Max-Q | NVIDIA H20 |

|---|---|---|

| Architecture | Ada Lovelace | Hopper |

| Generation | GeForce 40 Mobile | Server Hopper (Hxx) |

| Chip | AD106 | GH100 |

| Transistors | 22,900 million | 80,000 million |

| Die Size | 188 mm² | 814 mm² |

| Transistor Density | 121.8M / mm² | 98.3M / mm² |

| Base Clock | 735 MHz | 1830 MHz |

| Boost Clock | 1230 MHz | 1980 MHz |

| Memory Size | 8 GB | 96 GB |

| Memory Type | GDDR6 | HBM3 |

| Memory Bus Width | 128 bit | 6144 bit |

| Memory Bandwidth | 256.0 GB/s | 4.03 TB/s |

| Shading Units | 4608 | 9984 |

| TMUs | 144 | 312 |

| ROPs | 48 | 24 |

| RT Cores | 36 | None |

| Tensor Cores | 144 | 312 |

| Pixel Rate | 59.04 GPixel/s | 47.52 GPixel/s |

| Texture Rate | 177.1 GTexel/s | 617.8 GTexel/s |

| FP32 | 11.34 TFLOPS | 39.54 TFLOPS |

| FP16 | 11.34 TFLOPS (1:1) | 79.07 TFLOPS (2:1) |

| TDP | 35 W | 500 W |

| Slot Width | IGP | SXM Module |

| Power Connectors | None | Not listed |

| Suggested PSU | Not listed | 900 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2023-01-02 | 2024-01-31 |

| Predecessor | GeForce 30 Mobile | Server Ada |

| Successor | GeForce 50 Mobile | Server Blackwell |

The specification table shows every field where the two differ. Both use the same 5 nm TSMC process and come from NVIDIA, but the similarity stops at the foundry. The H20 has more of nearly everything except ROPs, RT cores, pixel rate, and mobile suitability.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA H20 has 9984 shading units, while the NVIDIA GeForce RTX 4070 Max-Q has 4608.

Q: Does the H20 support DirectX?

A: No. The H20 lists DirectX, OpenGL, and Vulkan as N/A, while the RTX 4070 Max-Q supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: What is the memory bandwidth difference?

A: The H20 provides 4.03 TB/s of bandwidth via HBM3, while the RTX 4070 Max-Q provides 256.0 GB/s via GDDR6.

Q: Which GPU has RT cores?

A: Only the RTX 4070 Max-Q has RT cores, with 36 of them. The H20 has none listed.

Q: What is the power draw comparison?

A: The RTX 4070 Max-Q has a TDP of 35 W, while the H20 has a TDP of 500 W with a suggested power supply of 900 W.

Q: When did each GPU launch?

A: The RTX 4070 Max-Q launched on January 2, 2023. The H20 launched on January 31, 2024.